Typewriting machine



E. G. ROWLEY TYPEWRITING MACHINE I March 1, 1927. 1,619,375

Filed Oct. 19, 1923 2 Shoots-Shoot 1 a Aid.

] Aim/M9 1,619,375 5. GLROWLEY TYPEWRiTING mourns Filed 0 ct.l9. 1923 2Shoots-Sheet 2 March 1 Patented Mar. 1, 1927.

UNITE sra'rss PTENT FFICEQ EDWARD G. ROWLEY, OF BELLEVILLE, NEW JERSEY,ASSIGNOR TO UNDER-WOOD TYPEWRITER COMPANY, OF NEW YORK, N. 55., ACORPORATIGN DELAWARE.

TYPEWRITING MACHINE.

' Application 'filed October 19, 1923. Serial No. 669,447;

The invention relates to ribbon-vibrating mechanism, and is applied to atypewriting machine in which the platen is on a frame shiftable' betweencase-positions, and in which the ribbon-vibrator is carried by theshiftframe and has a variable throw for presenting .a selectedcolor-zone of a. bichrome ribbon to the printing-point, and in which theribbon-vibrator may be silenced when it is desired, as for stenoiling.

In machines of this character, since the ribhon-vibrator is generallyoperable by all of the type-keys, it is convenient to actuate theribbon-vibrator through, and by means of, the universal bar whichcontrols the step-bystep letter-feed of the platen-carriage uponoperation of any type-key. It follows that certain of the mechanism foroperating the ribbon-vibrator may be on the main frame of the machine,whereas the ribbon-vibrator itself and certain actuating means thereformay be on the shift-frame.

An object of the present invention is the provision of novel and simplemeans whereby to connect the vibratonparts on the main frame with thevibrator-parts on the shiftframe. so that there will be no interferencewith the movement of the shift-frame, and so that the movementof thevibrator, in either case-position of the shift-frame, may be the correctmovement truly to present any selected color-zone of the ribbon to theprinting-point, without so-called bleeding of the ribbon, that is tosay, without possibility of the type overlapping the boundary zones ofthe ribbon in its impact against the platen.

The ribbon-vibrator is ordinarily actuated by means of a lever connectedthereto; and it has been proposed to actuate this lever by means of anarm or toggle movable in the same plane as that in which theribbon-vibrator-lever moves, or in a plane substantially parellelthereto. Heretofore, also, the variation in the throw of theribbon-vibrator has been obtained by shifting the fulcrum of theribbon-vibrator-lever along a slot in the latter.- In such aconstruction. the arm or toggle, in addition to actuating thevibratordever, tends to effect translatory movement of the same as awhole. If the connections of the lever to the ribbon-vibrator, and ofthe arm or toggle to the vibratorconnecsult, which will besufficient tomisplace the fulcrum-pin in the slot in the lever, and thereby effectoverthrow of the ribbon-vibrator, resulting in the objectionablebleeding aforesaid.

A further feature of the invention is a novel fulcrum-device. which,while permitting of variation in the throw of the ribbonvibrator,involves no slot for movement of the fulcrum-pin along the lever, butprovides for positive engagement of a fulcrumpin with the lever in eachsetting of the fulcrum.

- In the preferred embodiment of the invention, separate fulcrum-pinscontrol the different throws of the ribbon-vibrator, and eachfulcrum-pin, when in effective position, engages its own hole in theribbon-vibratorlever. Instead, therefore, of a slot along which a singlefulcrum-pin may be moved, each fulcrum-pin may be setso snugly into itsown hole as to prevent translatory shift or displacement of thevibrator-lever by the toggle or other device which operates the latter.In a structure in which the several foregoing features are combined,there is, therefore, in the first place no tendency on the part of thearm or toggle to displace the ribb0n-vibrat0r-lsver with respect to itsfulcrum; and, in the second place, each fulcrumpin, when in effectiveposition, engages the ribbonvibrator-lever in'such manner as to preventany displacement of the latter.

Preferably the fulcrum-pins are mounted on the opposite arms of arocker, which, when swung in one direction, causes one fulcrum-pin tocome into efiective engagement with the ribbon-vibrator-lever, andwhich, when swung in the other direction, causes the other fulcrunrpinto be brought to effective position. In this connection, it is a featureof the invention that the fulcrum-pinrocker, or other carrier may be setin a neutral position, in which neither fulcrum-pin may engage theribbon-vibrator-lever; in which event, the ribbon-vibratorlever will notmove the ribbon-vibrator when the typekeys are operated, and theribbonwilmator will be silent, as for steneilin Other features andadvantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a view, in side elevation, partly crosssectional, of atypewriting machine embodying the present invention; the parts being innormal or idle position.

Figure 2 is a view, in side elevation, pa rtly cross-sectional, of theribbon-vibrator and the connections thereof to the universal bar; thefulcrum-pin-plate and associated parts being shown, and the vibratorbeing shown as elevated by depression of a type'key for printing in theupper or blackzone of the ribbon.

Figure 3 is a view similar to Figure 2, ex cept that the vibrator isshown in position for printing in the lower or red zone of the ribbon.

Figure 4; is a top plan view, showing the fnlcrum-pin-plate set forprinting in the lower or red-ribbon zone, and showing the lever forsetting the pin-plate.

Figure 5 is a view similar to Figure 4, except that the pin-plate is setin neutral position, so that the ribbon-vibrator is rendcred silent, asfor steneiling.

Figure 6 is a top plan view of the assembled mechanism, thefulerum-pin-plate being set for printing in the up )er or black zone ofthe ribbon, and the le t-hand part of the machine being broken away.

Figure 7 is a view, in front elevation, of the parts shown in Figure 6.

The machine herein illustrated is of the front-strike type, andcomprises character keys 10, which throw type-bars 11 upward andrearward against the front of a platen 12, which is journaled in asheet-metal carriage 13. The carriage travels to the left under thecontrol of escapement mechanism,

not shown, and is provided with roller-bearings 14 and 15, by which ittravels on sheetmetal tracks 16 and 17. The tracks 16 and 17 form partofa shift frame, which also includes a downwardly-extending rear member 18and forwardly-extending side mem bers 19; the latter being provided withpivotscrews 20. by means of which the shift-frame is pivoted at eitherside to one of a pair of upper long links 21, these links being, inturn, pivoted to the main frame 22 by pivots 23 nearly behind butsomewhat below the normal position of the pivots 20.

For guiding the shift-frame, there is provided a. pair of links orrock-arms 21, one at each side of the machine, and each provided with astub-shaft 25, onwhich rests a yoke 26 formed in the corresponding sidepiece 19 of the shift-frame; the links 24 being fast at their rear endsto a transversely extending rock-shaft 27, which is encircled by a oil asheet-metal rock-arm 35 fast on the spring, not shown, so tensioned asto assist in lifting the shift-frame to upper case.

For lifting the shifti'ra1r1e, there is provided, at one side of thekeyboard, a shiftkcy 29, fulcrumed on a short shaft 30 on a standard 31rising from a cross-tie 32, which connects the sides of the main frame.The shitt-key-levcr is provided with a rearward extension 33 underlyingthe elbowed end 3 1 shaft 27. It follows that, when the shiftkcy 29 isdepressed, its rearward extension 33 hits the rock-arm 35, therebyrocking the arms 24 upward so that the stub-shaftsflo on the latter willlift the shitt-trame. The shift-key 29 may be depressed until the shift-"lirame is arrested by inwardly-turned heels 36 thereon, one on eachside plate 19 thereof, and such heels strike set screws (not shown) onthe turned-over ends of arms or backets (not shown) secured to across-piece 410 which connects the side plates of the main frame at thelower rear portion of the latter. When the shift-frame is shifted tothis position, the types 41 on the type-bars 11 are effective to print,instead of the normally eitective lowercase types 42. Suitable means,not shown, is provided to arrest the shifttrame in normal lower-caseposition when it is allowed by gravity to return to such position uponrelease of the sl1ift-key.

The character-keys 10, when actuated, move character-key'levers 44around a common fulcrum-plate 45, supported on the crosstie 40. Eachkey-lever 44, when actuated, moves against the tension of a spring 46 toswing a bell-crank, not shown, and, through the latter, to pull on alink, not shown, to cause its type-bar 11 to swing.

To cause the carriage to move from one letter-space position to another,while typing, there is provided a universal bar l7, supported by meansof arms 48 on a rock sha'lt 19; with which universal bar the keyleversengage, when depressed, by means of shoulders or lugs 50 on thekey-levers. The rock-shaft 49 is journaled in brackets 51, one at eachend thereof, secured to the cross-bar 40. An arm, not shown, on theuniversal bar connects with and operates esoapementn'lechanism, notshown, for controlling the letter-feed movements of the carriage; sothat, upon each depression of any letter or numeral key-lever, thecarriage may have a letter-space advance under the action of thespring-drum. Escapement mechanism suitable for this purpose is shown inUnited States Letters Patent to Dobson, No. 1,417,- 304, dated May 23,1922.

Except when the ribbon is to remain in 1% neutral position, as, torinstance. in stenciling, the ribbon is to ho vibrated upon eachoperation of a character-key, whether the platen is in lower or uppercase-itihi'tt position; and, in accordance with the present in-- 13ven-tion, a bichrome ribbon may be employed, in which event the ribbonmay have a variable vibration to present one orthe other of thecolor-zones thereof to the printing point. The ribbon 59., con'iprisingcolor-zones 53 and 54, and wound uponspools, not shown, is threadedthrough the eyes 55 of a ribbonvibrator, which comprises arms 56,connected at their lower ends to form a U-shaped structure 57. Theribbon-vibrator has upand-down movement on a guide 58, secured by screws59 to a rail 60, which is unitary with the front carriage-guide-rail 16of the shift-frame, and which depends vertically from the forward edgeof the latter, and eX- tends lengthwise of the shift-frame, beingsecured at each end at 61 to brackets 62 on the side plates 19 of theshift-frame. The ribbon-vibratonguide comprises a pair of upright arms63, which are embraced by ears 64 turned around the same, one from eachof the arms 56'of the ribbon-vibrator. The base-piece of theribbon-vibrator-guide is slotted at 65 toprovide a' guideway for a stud66, by means of which the ribbon-vibrator is connected to one end of alever 67 The lever 67 extends rightward, lengthwise of the platen, andnear its right-hand end is supported by resting within a slot 68 in aforwardly-projecting ear 69 of a bracket 70, secured by screws 71 to thefront face of the rail 60. The bracket has alsoa forwardl extending,horizontally-disposed ear 7 2, to which is pivoted at 7 3a'horizontally-disposed plate 74, being forked to have arms 75 and 7 6.The arms 75 and 7 6 terminate in upturned cars 77 and 78, carryinghorizontally-disposed pins 79 and 80, respectively.

hen the lever 67 rests, as aforesaid, in the bottom of the slot 68, andthe fulcrum-pinplate 74 is in Figure 6 position, the fulcrumpin 80registers with and protrudes through a pin-hole 81 in the lever 67; thepin 80 then serving as the fulcrum of the lever 67. hen, however, thefulcrum-pin-plate 74 is in Figure 4 positiomthe fulcrum-pin 7 9registers with and protrudes through a pinhole 82 in the lever 67. Atthis time the pin 80 is clear of the lever 67, and the pin 79 serves asthe fulcrum of that lever.

As will presently appear, the lever 67, when fulcrumed on the pin 81,has a throw with the ribbon-vibrator sufficient to present the upper orblack ribbon color zone to the printing point; and, when fulcrumed onthe pin 79, has a greater throw sufficient to present the lower or redcolor zone of the ribbon at the printing point. The fulcrum-pinplatemay, however, be set in an intermediate position, as shown in Figure 5,in which position neither of the pins 7 9, 80 can serve as a fulcrumtherefor, because both pins are out of contact with the lever. In orderthat either pin 7 9, 80 may readily find its way into its respectivepin-hole in the lever 67, the

ends of the pins 79, 80, as shown in the drawings, are tapered.

The pin-plate is set by means of a lever having two arms 83 and 84,pivoted at 85 on a bracket 86, secured by screws 87 to the lower frontcross-tie 32 of the main frame, and rising from the latter toapproximately the plane of the fulcrum-plate 74. The lever 83- 84engages the fulcrum-pin-plate 74 by means of a pin '88 in the rear endof the arm 83 set into a slot 89 in the fulcrumpin-plate. The slot 89 isof suiiicient length to permit of the angular play of the parts. Theforward end of the arm 84 of the lever carries a finger-piece 84", whichprojects through a horizontalslot 90 in the front wall 91 of the mainframe, so as to be accessible to the operator. A flange or plate 92 onthe frame may be marked as indicated at 93, 94 and 95, to show theproper black, red and neutral or silent positions, respectively, for thefinger-piece 84 It has been noted that the fulcrum-pin- I plate 74 iscarried by the shift-frame, whereas the lever 83-84 is on a bracket onthe main frame. In order that the connections of the lever 8384 with thefulcrum-pinplate may be maintained in all case-positions of theshift-frame, the pin 88 (see Figure 1) is shown as of suflicient lengthto maintain its connection with the fulcrum-pin-plate, whether theshift-framebe in its lowermost or uppermost position.

The lever 67 is actuated by the following means whenever a type-key isoperated. On a forwardly-projecting ear 96 on a depending arm 97,forming part of the bracket 70, there is pivoted at 98 one end of atoggle 99 and 100. The other end of the toggle is pivotally connected toa pin 101 on a tongue 102, formed on the lower edge of the lever 67 andextending parallel thereto; the point of pivotal connection of thetoggle to the lever 67 being between the fulcrum-pin-plate and theribbon-vibrator. The arm 99 of the toggle is connected by a link 103 toan arm 104, fast on the rock-shaft 49, on which the universal bar ismounted. A leaf-spring 105, which, by bearing upon one of the universalbar-arms 48, holds the latter up in normal position and returns thelatter to normal position when free to do so, acts through the shaft 49,arm 104 and link 103, to hold the toggle in its collapsed or folded,Figure 1, normal, position.

In operation, when any type-key is depressed, and depresses theuniversal bar, the arm 104 on the rock-shaft 49 is rocked forward, andpushes forward the link 103 to straighten out the toggle, as shown inFigures 2 and 3, thus causing the same to rock the lever 67 aroundwhichever fulcrum-pin 7980 may be in engagement therewith; or, whenneither fulcrum-pin is in engagement with the lever 67, to cause therighthand end of the lever to rock idly upward, without movement of: theribl')on-vibrator.

It will be noted that the vibratory lever (57 swin s uponclosc fittingpivots; that the stud cc may have a close fitting sliding movementwithin the slot to accurately guide the vibrator and provide for a .fewthousandths looseness for the end of the lever pivoted thereto at theopposite side of the vibrator, to prevent any stress being transferredto either pivot 79 or that the lever 67 supported within a guiding slot(58 on the shift frame to maintain the lever in parallel relation withthe vibrator and with the platen; that the toggle swinging under andcrosswise to the plane of the vibratorlever provides for a compactstructure, a straight-line transmission and reduces the number ofoperative parts between the universal bar and vibratory lever; that theguiding slot 68 for the lever 67 is positioned between the toggle andthe two fulcrums at the free end of the lever, to resist any sidewisestress from the movement of the transverse toggle, tending to push thelever out of aligmnent, to maintain engagement between each pivot 79 orSO and a fulcrum on the lever, and normally maintain registry betweeneach fulcrum and a shifting pivot; that the rocker or plate '74-. andassociated pivots 79 and 80 are fulcrumed upon the shift frame to swingat right angles to the plane of the lever 67 that the manuallyoperatedshift lever 83-84: is fulcrumed upon the machineframe to swing in thesame plane as the rocker 74, and has a loose connection with the rockerto provide for a case-shift movement of the latter and maintain auniform transmission from the lever at either shift position; and thatthe transmission from the universal bar to the toggle straightcns outthe toggle between a fixed pivot on the shift frame directly under apivot on the vibratory lever, to vibrate the lever in practically astraight line and also prevent overthrow of the latter at the end of theribbon-vibrating movement.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a tvpewriting machine. the combination of a platen and a shiftframe therefor shiftable to different case-positions. a vibratoryribbon-carrier on the shiftable frame, means wholly mounted upon theshiftable frame to predetermine the throw of the ribbon-carrier,including a ribbon-vibrator lever connected thereto and a rocker havingspaced-off pivot-pins operable to engage with the vibrator-lever atdifferent positions of its length, and keyactuated means to vibrate thelever. a p

2. In a typewriting machine lllClllCllIlg a frame, the combination of aplaten and a shift frame therefor shiftable to different(ft1SC-I)0Sltl0l1$, a vib 'atory ribbon-carrier on the shiflable frame,means wholly mounted upon the shiftable frame to predetermine the throwof the riblmn-carricr, including a ribbmi-vibrator lever connectedthereto, and a rocker having spaced-off pivot-pins operable to engagewith the vibrator-lever at different positions of its length, and amanual control lever on the machineframe to rock the rocker for apredetermined throw of the ribbon-carrier.

3. In a typcwriting machine, a platen, a ribbon-vil5 rator, a lever foroperating the ribbon-vibrator, a pair of fulcrums effective on the leverat different distances from the vibrator, a rocker on which the fulcrumsare oppositely disposed, means for actuating the rocker to render one orthe other of the fulcrums effective, according to which colorzone of avbichrome ribbon is selected for presentation to the printing-point,typekcvs, and means for actuating the lever from the t vpedievs.

-:l. In a typewriting machine including a frame, the combination of aplaten and a shift frame therefor shiftable to different case-positions,a vibratory ribbon-carrier on the shiftable frame, means wholly mountedupon the shiftable frame to predetermine the throw of theribbon-carrier, including a ril1ilmn-vih1ntor lever connected theretoand a rocker having spacedoff pivot-pins operable to engage with thevibrator at different positions of its length, and a manual controllever on the machinc-frame to rock the rocker for the same predeterminedthrow at either shift position of the shift frame.

5. In a tvpewriting machine, a platen, a riblion-vibrator. a lever foroperating the riblion-vibrator. a pair of fulcrumpins ene'ageable withthe lever at different distances from the vibrator, a rocker havingoppositely-directed arms, on each of which arms one of the fulcrum pinsis mounted, means for actuating the rocker to bring one or the other ofthe fulcrum-pins to effective position on the lever, according to whichcolorzone of a. bichrome ribbon is selected for presentation to theprinting-point, type-keys, and means for actuating the lever from thetype-keys.

6. In a tvpewriting machine. a platen. a riblmn-vibrator, a lever foroperating the ribbon-vibrator. a pair of fulcrum-pins engageable withthe lever at different distances from the vibrator, a rocker havingoppositel v-directed arms. on each of which arms one of the fulcrum-pinsis mounted, means fo' actuating the rocker to cause one or the other ofthe fulcrum'pins to enter one of two holes in the lever, according towhich color-zone of a bichrome ribbon is selected for presentation tothe printingpoint, typekeys, and means for actuating the lever from thetype-keys.

7. In a typewriting machine, a platen, a ribbon-vibrator, a lever foroperating the ribbon-vibrator, a pair of fulcrums effective on the leverat different distances from the vibrator, a rocker on which the fulcrumsare oppositely disposed, means for actuating the rocker to render one orthe other of the fulcrums effective, according to which colorzone of abichrome ribbon is selected for presentation to the printing-point,typekeys, and means for actuating the leverfrom the type-keys, therocker being movable in a substantially horizontal plane, and the leverbeing movable in a substantially vertical plane. Y

8. In a typewriting machine, a platen, a ribbon-vibrator, a lever foroperating the ribbon-vibrator, a pair of fulcrum-pins engageable withthe lever at diflerent distances from the vibrator, a rocker havingoppositely-directed arms, on each of which arms one of the fulcrum-pinsis mounted, means for actuating the rocker to cause one or the other ofthe fulcrum-pins to enter one of two holes in the lever, according towhich'color-zone of a bichrome ribbon is select-ed for presentation tothe printing-point, type-keys,jand

means for actuating the lever from the typekeys, the pins being taperedso as readily to seat themselves in the holes in the lever.

' 9. In a typewriting machine, a plat-en, a ribbon-vibrator, a lever foroperating the ribbon-vibrator, a pair. of fulcrums effective on thelever at different distances from the vibrator, a rocker {on which thefulcrums are oppositely disposed,-means for actuating the rocker'torender one or the other of the fulcrums effective, according to whichcolorzone of a bichrome ribbon is selected for presentation to the;printing-point, typekeys, and means for actuating the lever from thetype keys, the rocker having a neutral position in which neither of thefulcrums is 10. In a typewriting machine, a platen, a ribbon-vibrat0r, alever for, operating the ribbon vibrator, a pair of fulcrum-pinsengageable with the lever at difierent distances from the vibrator, arocker having oppositely-directed arms, on each of which arms one of thefulcrum-pins is mounted, means for actuating the rocker to bring one orthe other of the fulcrum-pins to effective posi tion on the lever,according to which colorzone of a bichrome ribbon is selected forpresentation to the printing-point, type-keys, and means for actuatingthe lever from the type-keys, the rocker having a neutral posi- ,tion inwhich neither ofthe fulcrum-pins is in engagement with the lever.

11 Ina typewriting machine, the com bination of a shift frame thereforshiftable to different case-positions, a vibratoryfribdifferentpositions of its length or operable to be disengageable from saidvibrator-lever I to silence the ribbon-carrier.

1 12. In a typewriting machine, a platen, a shift frame for the platen,means for shifting the shift frame between case-positions, aribbon-vibrator on the shift frame, a lever connected to theribbon-vibrator for operating the latter, a pair of fulcrums efiectiveon the lever at different distances from the vibrator, a rocker on thecase-shift frameon which the fulcrums are oppositely disposed, means onthe main frame of the machine for actuating the rocker to render, ineither case-i position of the shift frame, one or the other of thefulcrums effective, according to which color-zone of a bichrome ribbonis selected for presentation to the printing-point, typekeys, and meansfor actuating the lever from the typekeys.

13. In a typewriting machine, a platen, a shift frame for the platen,means for shifting the shift frame between case-positions, aribbon-vibrator on the shift frame, a lever connected to theribbon-vibrator for operating the latter, a pair of fulcrums effectiveon the lever at different distances from the vibrator, a carrier on thecase-shift frame for the fulcrums, a second lever on the main frame'ofthe machine for actuating the ,car-' rier to render, in eithercase-position of the shift frame, one or the other of the fulcrumseflective, according to which color-zone of a bichrome ribbon isselected for presentation to the printing-point, type-keys, and meansfor actuating the ribbon-vibrator-lever from the type-keys; the secondlever having a pinand-hole connection With the fulcrum-carrier, andthepin being of such length as to maintain engagement of the secondlever with the fulcrum-carrier in all case-positions of the shift frame.

14:- In a typewriting machine, a platen, a ribbon-vibrator, a levervibrating in a plane parallel to the front face of the platen andconnected with the ribbon-vibrator for operating the same, a toggle,connected to the ribbon-vibrator-lever and operating in a planesubstantially at right angles to the plane of movement of theribbon-vibratorlever, type-keys, a universal bar operable by thetype-keys, a rock-shaft on which the universal bar is mounted, an armfast to the rock-shaft, and a link extending forward from the arm on therock-shaft to the toggle for actuating the latter.

15, In a typewriting machine, a platen, a ribbon-vibrator movable in asubstantially vertical plane, a lever, connected at one end to theribbon-vibrator and extending lengthwise of the platen, and adapted tobe oscillated in a substantially vertical plane, a toggle connected tothe ribbon-vibratorlever and actuable in a plane at right angles to theplane of movement of the ribbonvibrator-lever, type-keys, a universalbar operable by the type-keys, a rock-shaft on which the univen al baris mounted, an arm on the rock-shaft, and afrJr\vardly-extendinglinkconnecting the arm on the rockshaft to thetoggle, whereby to actuate the toggle when a typed ey depressed.

16. In a typewriting machine, a platen, a ribbon-vibrator, a leverconnected at one end to the ribbon'vibrator, a pair of pin-andholefulcruins for the lever at different distances from the ribbon-vibrator,means for rendering one or the other of the pin-andhole fulcrnn'iseffective by a movement of the fulcrum at right angles to the plane ofmovement of the ribbon-vihrator-levcr, a toggle Connected to theribhon-vibrator-lever, and movable in a plane at right angles to theplane of movement of the ribbon-vibratorlever, type-keys, and means foractuating the toggle from the type-keys.

17. In a typewriting machine, a platen, a ribbon-vibrator, a leverconnected to the ribbon-vibrator, a rocker having oppositelydisposedarms, a fulcrum-pin on each of said arms, means for actuating the rockerto cause one or theother of the pins to move substantiallyperpendicularly to the ribbonvihratordever, into a hole in the lever, atoggle connected to the ribbon-vibratorlever, and movable in a planesubstantially at right angles to the plane of movement of theribbon-vibrator-lever, type-keys, and means for actuating the togglefrom the type-keys. a p

18. In a typewriting machine, a platen, a shift frame for the platen,means for shifting the shift frame between case-positions, aribbon-viln'ator on the shift frame, a lever connected to theribbon-viln'ator for operating the same; the lever having a pair offulcrum-holes therein spaced at different distances from theribbon-vibrator, a rocker on the shift frame having oppositely-dis posedarms, on each of which is a pin for entry into one of the holes in theribbonvibrator-lever, a toggle on the shift frame, connected to theribbon-vihrator-lever for actuating the latter, type-keys, and means foractuating the toggle from the type-keys.

19. In a typewriting machine, a platen, a shift frame for the platen,means for shifting the shift frame between case-positions, arihbonvibrator on the shift frame, alever connected to theribbon-vibrator for operating the same; the lever having a pair offulcrum-holes therein spaced at different distances from theribbon-vibrator, a rocker on the shift frame havingoppositely-disposedarms,on each of which a pin for entry into one of the holes in theribbon-vibratorlcver, a toggle on the shift frame, connected to theribbon-vihratonlever for actuating the latter, type-keys, a universalbar actuable by the type-keys, a rock-shaft on the main frame on winchthe universal bar is mounted, an arm fast on the rock-shaft, and a linkconnecting the arm on the rockshaft to the toggle, whereby to actuatethe latter when a type key is operated.

520. In a typewriting machine including a platen, a shift frame thereforshiftable to different case-positions, a ribbon-carrying vibrator ontheshift frame, a vibrator-lever horizontally disposed along the front ofthe shift frame with the inner end. pivoted to the vibrator, a pair ofpivot-holes at the outer end of the lever at different distances fromthe vibrator, a pair of pivots fulcrumed on the shift frame to be rockedinto co-operation with the pivot-holes on the lever, a guide on theshift frame to normally maintain said leverhorizontally disposed andpromote the entrance of the pivots within the holes of the lever, andkeyactuated means to vibrate the lever.

21. In a typewriting machine including a platen, a shift frame thereforshiftable to different case-positions, a ribbon-carrying vibrator on theshift frame, a Vibrator-lever horizontally dis osed alongthe front ofthe shift frame wit1 the inner end pivoted to the vibrator, a pair ofpivotlioles at the outer end of the lever at different distances fromthe vibrator, a pair ofspaced-ofi' pivots fulcrumed on the shift frameto be rocked into co-operation with the pivotlioles on the lever, aguide on the shift frame including a slot, within which the lever isadjusted for an up-and-down sliding movement, a toggle connected to thelever adjacent the guide to vibrate the lever Without overthrow, andkey-actuated means to vibrate the lever.

22. In a typewriting machine including a platen, a shift frame thereforshiftable to different case-positions, a ribbon-carrying vibrator on theshift frame, a lever horizontally disposed along the front of the shiftframe with the inner end pivoted to the vibrator, a pair of pivot-holesat the outer end of the lever at different distances from the vibrator,a pair of pivots ful crumed on the platen-frame to be rocked intoco-operation with the pivot-holes on the lever, a guide including abracket secured to the shift frame and formed with an arm having a slotto guide and support the lever and promote registry between thepivotholes and the pivots, a toggle movable with the shift frame andconnected to the lever adjacent the osition of the guide to vibrate atedmeans to vibrate the level,

the lever wit IOUtOVBItlllOW, and key-actu- 23. In a typewriting machineincluding a platen, a shift frame therefor shiftable to differentcase-positions, a ribbon-carrying vibrator on the shift frame, ahorizontallydisposed lever pivoted at one end to the vibrator foroperating the same, a guide on the shift frame to suspend and maintainthe outer end of the lever in parallel relation to the platen,pivot-holes at the outer end of the lever spaced different distancesfrom the vibrator, a rocker pivoted on the shift frame, pivots arrangedon the rocker to Co operate with the pivot-holes of said lever to throwthe vibrator variable distances, a shift-lever fulcrumed upon themachinetrame having one arm thereof extending forwardly to the positionadjacent the keyboard and the other arm extending rearwardly to therocker, and means for loosely connecting the rear arm of the lever tothe rocker to permit of an independent movement of the rocker at acase-shift operation a without changing the leverage transmitted fromsaid shift-lever to the rocker.

24. In a typewriting machine including a platen, a shift frame thereforshiftable to different case-positions, a ribbon-carrying vibrator on theshift frame, a horizontallydisposed lever pivoted at one end to thevibrator for operating the same, a guide on the shift frame to'suspendand maintain the outer end of the lever in parallel relation to theplaten, pivot-holes at the outer end of the lever and spaced differentdistances from the vibrator, a rocker pivoted on the shift frame, pivotsarranged on the rocker to co-operate with the pivot-holes of said leverto throw the vibrator variable distances, a shift-lever fulcrumed uponthe machine-frame having one arm thereof 6X- tending forwardly to theposition adjacent the keyboard and the other arm extending rearwardly tothe rocker, and a loose pinand-slot connection between the lever androcker to permit the rocker to rise and fall with the case-shiftmovement Without changing the leverage between the lever and the rocker.

EDWARD Gr. ROVVLEY.

